Dispensing device



Dec. 16, 1930.

s. RAYMOND DISPENSING DEvI'cE Filed Sept. 4. 1928 IN VEN TOR. l/WZO/Zd,

ATTORNEYS.

Patented Dec. 16, 1930 PATENT, OFFICE GWYVNNE RAYMOND, or Kansas my,MISSOURI DISPENSING DEVICE Application filed September 4, 1928, SerialNo. 303,715.

This invention relates to filling apparatus for pressure discharge tanksand although it is primarily intended for use with pressure paintingsystems, it may be used with any liquid or free-flowing solid, such assand.

The chief object of the invention is to produce means and apparatus forthe filling of apressure paint tank so that the operation of paintingarticles as they pass on an endless driven conveyor or under any othercondition, may be continuous with no shut-down or substitution ofpainting equipment as is now necessary while the pressure painting tankis being refilled with paint. When the apparatus is used withfree-flowing solids, it will of course be understood that slightmodification in structure will preferably be necessasry such ashereinafter mentioned.

With the general objects named in view, the invention consists incertain novel and useful features of construction and organization ofparts as hereinafter described and claimed; and in order that it may befully understood, reference is to be had to the accompanying drawing, inwhich:

Figure 1 is a side elevation of the apparatus as arranged for use in apressure painting system.

Figure 2 is a section on the line IIII of Figure 1.

Figure3 is a diagrammatic view of a modified construction.

In the said drawing, where like reference characters identifycorresponding parts in all of the figures, 1 indicates a pressure tankfor the reception of a liquid or free-flowing solid, said tank, ifadapted for paint, being preferably provided with a constantly drivenagitator 2 propelled by an electric motor 3 or other suitable powermeans mounted on a support 4 secured to the head 5 of the tank, saidhead normally being provided with a removable top 6 held in air-tightrelation to the tank by clamps 7.

Projecting through the top 6 and extending into close proximity tothebottom of the tank is a liquid discharge pipe 8 to which a paintingline 9 is connected exteriorly of the tank and which leads to the pointwhere the paint is to be applied. In order to apply pressure tothepainting tank to force the paint out-through the discharge line 9, 10 isa conduit leading to the pressure tank 1 from any suitable source ofcompressed air supply, and having communication with the upper end ofthe tank by a connection 11, it being also noted that with paintingappara tus, a branch pressure supply line 12 leads to the same point asthe paint line 9 where the lines are joined or united in a spray head orother suitable apparatus for spraying the paint.

Under present conditions, as soon as the paint in the pressuretank 1 hasbeen exhausted, the air pressure must be shut ofi and the paintingoperations of. such tank cease while the top is removed and the tank isfilled with a fresh supply of paint.

In order, therefore, to obviate such shutdown, 13 indicates any suitablesupport for a locking or filling'vessel 14, it being noted that vessel14 is elevated so that it can discharge by, gravity into the pressuretank 1, and connecting the bottom of said vessel and the pressure tankis a discharge line 15, controlled by a' valve 16. The filling vessel 14is also equipped with a closable filling connection 17, said connectionbeing closed by a valve 18, as illustrated, it being here noted that thefilling vessel may, if desired, be closed by a removable screw cap orany other suitable air-tight closure instead of the valve, but where thefilling funnel 19 is employed the valve is the most convenient. Leadingfrom the upper part of the compressed air space in the pressure tank 1is a pressure line 20 connected at its opposite end to theupper part ofthe filling vessel 14, said line being controlled by a valve 21.

It is here to be pointed out that the connections above described maylead to practically any desired point on either the tank or the fillingvessel, the only exception being that the discharge line 15 must connectwith the bottom of the filling vessel if it is desired that all of thematerial shall fiow into the pressure tank, It will also be noted thatif the mechanism is to handle a free-flowing solid slide cut-ofis may besubstituted for the valves 16 and 18, and that the connection 15 IOUwill preferably have a continuous downward pitch from the filling vesselto the pressure tank to insure proper flow of the material.

The operation of the mechanism is sub stantially as follows, consideringthat the painting apparatus is under operation with pressure in the tank1 and the valves 16 and 21 closed: The paint supply in the pressure tankneeds to be replenished and the operator opens the filling valve 18 andpours fresh paint into the filling vessel, such vessel being equippedwith air venting valve 22 to exhaust air in the vessel as it isdisplaced by the paint. Valves 18 and 22 are now closed and the pressureline valve 21 is opened to equalize the pressures in the filling vesseland the pressure tank. The discharge valve 16 is new opened and thepaint in said filling vessel will flow by gravity into the pressure tankwithout interfering with the continuous operation of the paintingsystem. It is to be here noted that under some conditions, especiallywith light paint or with an inclined discharge line, it may be possibleto omit the pressure line 20 as the air in the pressure tank may escapeinto the upper end of the filling vessel by passing upwardly along oneside of the discharge line 15 while the displaced paint is flowing downthe other side, as will be readily understood.

In Figure 3 a modified construction is shown, in which the pressure tank1 is at a higher level than the filling vessel 14, said tank and vesselbeing connected by a valvecontrolled line 23. The painting tank isequipped with a paint discharge line 24 and with an air pressure line25, while the filling vessel is provided with a closable filling opening26 and an air supply line 27. WVhen it is desired to fill the paintingvessel, the pressure in filling vessel 14 is increased sufficiently toovercome the pressure in tank 1 and also to lift the paint from 14 to 1,the line 23 being opened to permit passage of the liquid.

From the above description it will be apparent that 1 have producedapparatus possessing the features of advantage set forth as desirable inthe statement of the object of the invention, and which may be modifiedin minor particulars without departing from the principle ofconstruction and mode of operation involved or from the spirit and scopeof the appended claim.

I claim:

The combination in pressure spraying apparatus, of a pressure tankadapted to contain a liquid to be sprayed, a discharge connectionleading from a point adjacent the bottom of said tank, a filling tankadapted to contain spraying liquid to be admitted to aid pressure tank,a valve-controlled liquid supply line connected at one end to the bottomof the filling tank and at its other end to said pressure tank, avalve-controlled pres- In testimony whereof I afiix my signature.

GWYNNE RAYMOND.

